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Overhead view of USS LSM-60 being prepared for "Operation Crossroads" Test Baker at Eniwetok.USS LSM-60
designated the "Cinderella Ship" for Test Baker, had the dubious distinction of having the bomb strapped to the bottom of her hull.US Navy photo.

USS LSM / LSMR Association

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USS LSM-60 with the midships hoist being used to lower the cassion into the ship's hold for "Operation Crossroads" Test Baker at Bikini Atoll.US Navy photo.

USS LSM-60 moored pierside at the shipyard while work progresses on her preparation for "Operation Crossroads" Test Baker.US Navy photo.

USS LSM / LSMR Association

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USS LSM-60 anchored at Bikini Atoll ready for "Operation Crossroads" Test Baker. The caisson slung under her hull has been lowered to a predetermined depth.
Test Baker was the under water shot designed to determine the effects of an under water atomic bomb explosion upon ships, particularly ship hulls. Use of a surface vessel from which to suspend the bomb made possible a detonation at exactly the predetermined depth and at the exact center of the target array. All errors in positioning the bomb were thus avoided. The antenna used to receive the radio signal which detonated the bomb and the midships hoist used for lowering the bomb caisson are clearly visible in this photo.US Navy photo.

USS LSM / LSMR Association

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USS LSM-60 was obliterated during Operation "Crossroads," Test Baker at Eniwetok Atoll when the signal was received via her antenna at 0835 24 July 1946.US Department of Energy photo